/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the documentation of Qt. It was originally
** published as part of Qt Quarterly.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file.  Please review the following information
** to ensure GNU General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
** exception, Nokia gives you certain additional rights. These rights
** are described in the Nokia Qt GPL Exception version 1.3, included in
** the file GPL_EXCEPTION.txt in this package.
**
** Qt for Windows(R) Licensees
** As a special exception, Nokia, as the sole copyright holder for Qt
** Designer, grants users of the Qt/Eclipse Integration plug-in the
** right for the Qt/Eclipse Integration to link to functionality
** provided by Qt Designer and its related libraries.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
****************************************************************************/

#ifndef OPENGLSCENE_H
#define OPENGLSCENE_H

#include "point3d.h"

#include <QGraphicsScene>
#include <QLabel>
#include <QTime>

#ifndef QT_NO_CONCURRENT
#include <QFutureWatcher>
#endif

class Model;

class OpenGLScene : public QGraphicsScene
{
    Q_OBJECT

public:
    OpenGLScene();

    void drawBackground(QPainter *painter, const QRectF &rect);
    void drawForeground(QPainter *painter, const QRectF &rect);

public slots:
    void enableWireframe(bool enabled);
    void enableNormals(bool enabled);
    void setModelColor();
    void setBackgroundColor();
    void loadModel();
    void loadModel(const QString &filePath);
    void modelLoaded();

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
    void wheelEvent(QGraphicsSceneWheelEvent * wheelEvent);

private:
    QDialog *createDialog(const QString &windowTitle) const;

    void setModel(Model *model);

    bool m_wireframeEnabled;
    bool m_normalsEnabled;

    QColor m_modelColor;
    QColor m_backgroundColor;

    Model *m_model;

    QTime m_time;
    int m_lastTime;
    int m_mouseEventTime;

    float m_distance;
    Point3d m_rotation;
    Point3d m_angularMomentum;
    Point3d m_accumulatedMomentum;

    QLabel *m_labels[4];
    QWidget *m_modelButton;

    QGraphicsRectItem *m_lightItem;

#ifndef QT_NO_CONCURRENT
    QFutureWatcher<Model *> m_modelLoader;
#endif
};

#endif
